Hill Plot

2016 ◽  
Author(s):  
Monica Nordberg ◽  
John H. Duffus ◽  
Douglas M. Templeton
Keyword(s):  
Hill Plot

COMPARISON OF HILL AND ROW PLOTS FOR AGRONOMIC AND QUALITY TRAITS IN SPRING MALTING BARLEY (Hordeum vulgare L.)

1990 ◽  
Vol 70 (1) ◽  
pp. 61-69 ◽  
Author(s):  
S. TRAGOONRUNG ◽  
P. M. HAYES ◽  
B. L. JONES
Keyword(s):  
Hordeum Vulgare ◽  
Recurrent Selection ◽  
Agronomic Traits ◽  
Malting Quality ◽  
Quality Traits ◽  
Malting Barley ◽  
Seeding Rate ◽  
Hordeum Vulgare L ◽  
Hill Plot ◽  
Hill Plots

Provided they reliably predict row plot performance, hill plots should be useful for doubled haploid recurrent selection in malting barley (Hordeum vulgare L.). The primary objective of this research was to compare hill and row plot expression of agronomic and malting quality traits in an array of elite spring habit barley germplasm grown under irrigated conditions. A supporting objective was to identify an appropriate seeding rate for hill plot evaluation. Eight-replicate hill plots at four seeding rates (10, 20, 30, and 40 seeds per hill) were compared with adjacent four-replicate row plots in each of three environments. Genotype and genotype × environment interactions were significant for most agronomic traits in both plot types. Significant, linear genotype responses to hill plot seeding rates were observed for most agronomic traits. Seeding rate had no consistent effect on the expression of malting quality. The percentage of lines in common in the two plot types at 25 and 50% selection intensities was the most useful comparison statistic and indicated hill plot selection should be effective for most agronomic and malting quality traits. Although yield heritability estimates were consistently high in both hill and row plots, there was little relationship between trait expression in the two plot types. Differential tillering in response to hill plot competition is likely responsible. A seeding rate of 10 seeds per hill should be appropriate in preliminary screening for traits amenable to hill plot selection in irrigated spring habit malting barley.Key words: Hordeum vulgare L., malting quality, breeding methods, barley

scholarly journals How to make a Hill plot

2000 ◽  
Vol 28 (1) ◽  
pp. 254-274 ◽  
Author(s):  
Holger Drees ◽  
Laurens de Haan ◽  
Sidney Resnick
Keyword(s):  
Hill Plot

scholarly journals The application of new distribution in determining extreme hydrologic events such as floods

2020 ◽  
Author(s):  
Łukasz Gruss ◽  
Jaroslav Pollert Jr. ◽  
Jaroslav Pollert Sr. ◽  
Mirosław Wiatkowski ◽  
Stanisław Czaban
Keyword(s):  
Extreme Value ◽  
Generalized Extreme Value Distribution ◽  
Accurate Estimation ◽  
Annual Maximum ◽  
Generalized Extreme Value ◽  
Hill Plot ◽  
Pearson Type ◽  
The Mean ◽  
Parameter Distributions ◽  
Mixed Distributions

Abstract. In hydrology, statistics of extremes play an important role in the use of time series analysis as well as in planning, design and operation of hydrotechnical structures and water systems. In particular, probability distributions are used to estimate and forecast floods. However, in order to use distributions, the data must be random, with a change-point and should not have a trend. Unfortunately, the data being analyzed are not independent, which is very often due to the anthropogenic impact, among other factors. In situations where various processes generate rainfall and floods in river basins, the use of mixed distributions is recommended. However, an accurate estimation of multiple parameters derived from a mixture of distributions can be difficult, which is the biggest disadvantage of this approach. Therefore, as an alternative, we propose a new extension of the GEV distribution – the Dual Gamma Generalized Extreme Value Distribution (GGEV) developed by Nascimento, Bourguignony and Leão (2016). We compared this distribution with selected 3-parameter distributions: Pearson type III, Log-Normal, Weibull and Generalized Extreme Value. In addition, various methods of estimating 3-parameter distributions were used. As a case study, rivers from Poland and the Czech Republic were investigated, because this has a significant impact on water management in the Upper Oder basin due to the strategic water reservoirs and other hydrotechnical constructions, either existing or planned. Currently, there are no clearly indicated distributions for the Upper Oder basin. Therefore, our aim was to approximate them. Two methods were used, namely the Annual Maximum (AM) and the Peaks Over Threshold (POT). In the latter case, two methods for determining the threshold were used, namely: the Mean of the Annual Maximum River Flows (MAMRF) and the Hill plot. Hence, the basic 3-parameter Weibull distribution, with parameters estimated using the modified method of moments and the maximum likelihood estimation, yielded a better fit to the observation series in the AM and POT methods. For the AM and POT (MAMRF, Hill plot) methods, the GGEV turned out to be the best-fitted distribution according to the Mean Absolute Relative Error (MARE). The GGEV distribution can be used as an alternative to mixed distributions in various samples, both homogeneous and heterogeneous. This distribution turned out to be the best fit especially for the sample whose independence is affected by the presence of a GGEV water reservoir.

scholarly journals Seleksi Beberapa Klon Kentang (Solanum tuberosum L.) dari Hasil Persilangan untuk Karakter Daya Hasil Tinggi pada Ekosistem Dataran Tinggi di Ciwidey

2016 ◽  
Vol 18 (2) ◽  
pp. 45
Author(s):  
NFN Kusmana
Keyword(s):  
Solanum Tuberosum ◽  
Sea Level ◽  
Solanum Tuberosum L ◽  
Block Design ◽  
Potato Chips ◽  
Experimental Unit ◽  
Hill Plot ◽  
Randomized Complete Block Design ◽  
Superior Clones ◽  
Selection Of

<p>Selection of Several Potato Clones (Solanum tuberosum L.) Derived from Crosses for High Yielding on Highland of Ciwidey. Kusmana. Granola and Atlantic are two dominant varieties grown by farmers. So far no other alternative superior varieties that can be used by farmers to develop potato cultivation in the field. The objective of the research was to identify potato clones that were highest yielding in the highland Ciwidey and the potential for multy location evaluation. The experiment was conducted in Ciwidey, Bandung District at altitude 1.400 m above sea level. A total of 41 advanced breeding materials and variety was planted. A Randomized Complete Block Design with three replications was used and an experimental unit consisted of 10 hill/plot. The result indicated that high yielding clones (up to 35.6 t/ha) were obtained clones 29, (43.8 t/ha), 11 (38.2 t/ha), 31 (37.3 t/ha), 13 (36 t/ha) and 35 (35.6 t/ha). Whereas, the variety of Granola as a comparison was yielded only 23.4 t/ha. Clones 9, 22 and 35 were suitable for potato chips. This study indicated that among the genotipes tested, there were superior clones were promissing for potato cultivation in indonesia.</p><p> </p><p><strong>Abstrak</strong></p><p>Areal pertanaman kentang cenderung semakin meningkat namun hasil yang dicapai petani masih relatif rendah sehingga diperlukan upaya pemuliaan untuk memperbaiki varietas yang ada. Tujuan penelitian ialah mendapatkan informasi tentang daya hasil 41 klon kentang yang berpotensi hasil tinggi pada ekosistem dataran tinggi Ciwidey. Penelitian dilaksanakan di Kecamatan Ciwidey, Kabupaten Bandung elevasi 1.400 m di atas permukaan laut. Rancangan Percobaan yang digunakan ialah Rancangan Acak Kelompok dengan tiga ulangan. Jumlah klon yang diuji meliputi 41 klon harapan, termasuk varietas pembanding Granola. Populasi tanaman per plot terdiri atas 10 individu tanaman. Hasil pengamatan menunjukkan bahwa hasil kentang tertinggi diperoleh pada klon 29 (43,8 t/ha), 11 (38,2 t/ha), 31 (37,3 t/ha), 13 (36 t/ha), dan 35 (35,6 t/ha), sementara hasil varietas pembanding Granola hanya 23,4 t/ha. Klon 9, 22 dan 35 berpotensi sebagai bahan baku industri kripik kentang. Kegiatan ini menghasilkan klon-klon kentang unggul sebagai calon varietas baru yang memberikan kontribusi terhadap peningkatan produksi kentang di Indonesia.</p>

The predictive value of parental, F1 and early generation hill-plot testing for yield among rapidly advanced hexaploid triticales

1994 ◽  
Vol 45 (1) ◽  
pp. 51 ◽  
Author(s):  
RM Trethowan ◽  
NL Darvey
Keyword(s):  
Grain Yield ◽  
Harvest Index ◽  
Dry Matter ◽  
Yield Potential ◽  
Hill Plot ◽  
Plot Yield ◽  
Backcross Populations ◽  
Large Plot ◽  
Rapid Generation ◽  
Hill Plots

Rapid generation turnover techniques were used to identify parental, single cross or backcross populations with yield potential in triticale. Both complete (complete rye genome) and substituted (2D/2R substitution) triticale karyotypes were crossed. Temperature and light controlled greenhouses, immature seed germination, embryo culture and off season nurseries were used to advance three generations in 11 months. Due to seed limitations in the early generations, hill-plots were used to measure total dry matter, grain yield and harvest index. Mid-parent, F2 and F3 hill-plot yield was equivalent to or better than dry matter and harvest index for the prediction of F4 hill-plot yield. Both hill-plot yield (r = 0.54) and dry matter (r = 0-51) were significantly correlated (P < 0.01) with large plot grain yield at the same site in the same year. The best predictors of F4 hill-plot yield were mid-parent, F2 and F3 mean hill-plot yield with phenotypic correlations of 0- 26� 0.17, 0.3510 -03 and 0.44� 0.06 respectively. The F1 (r = -0.02�0.12) provided no association with F4 hill-plot yield, reflecting the high average heterosis for yield (22%) observed in this material. Mid-parent, F2, F3 and F4 dry matter and yield means were significantly lower in inter-karyotypic crosses than intra-karyotypic crosses; however, the relationship between generations appeared to be independent of karyotype. A response to visual selection of individual spikes from hill-plots was obtained at two sites for dry matter and grain yield.

scholarly journals Absence of positive co-operativity in the binding of 2,3,7,8-tetrachlorodibenzo-p-dioxin to its cytosolic receptor protein

1987 ◽  
Vol 244 (3) ◽  
pp. 539-546 ◽  
Author(s):  
K Farrell ◽  
S Safe
Keyword(s):  
Hill Coefficient ◽  
Receptor Protein ◽  
Ah Receptor ◽  
Nonspecific Binding ◽  
Binding Studies ◽  
Hill Plot ◽  
Plot Analysis ◽  
Tetrachlorodibenzo P Dioxin ◽  
High Level ◽  
The Hill

The role of positive co-operativity in stabilizing the binding of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) to the rat hepatic cytosolic TCDD receptor protein (Ah receptor) was investigated. The binding mechanism of TCDD was determined by kinetic means through equilibrium and saturation binding studies, and Scatchard and Hill plot analysis. In all studies, the slope of the Hill plot was close to 1.0, indicating the absence of positive co-operativity. Interpretation of the Scatchard plot was however complicated by the fact that both linear and nonlinear plots were experimentally obtained. The nonlinearity was shown to be an experimental artifact and a consequence not of co-operativity, but of high levels of nonspecific binding. The high level of nonspecific binding could be attributed to: (1) lipophilicity of the TCDD ligand, and (2) inefficient competition of receptor-bound [3H]TCDD. When nonspecific binding was minimized, the Scatchard slope was linear and in agreement with the Hill coefficient, thus indicating the lack of positive co-operativity in the binding of TCDD to the Ah receptor.

Comparison of Different Hill‐plot Designs for Evaluating Quantitative Response to Oat Crown Rust 1

Crop Science ◽  
1975 ◽  
Vol 15 (6) ◽  
pp. 803-806 ◽  
Author(s):  
Soontree Patanothai ◽  
L. J. Michel ◽  
M. D. Simons
Keyword(s):  
Crown Rust ◽  
Hill Plot ◽  
Oat Crown Rust ◽  
Quantitative Response

COMPARISON OF HILL AND ROW PLOTS FOR F3 YIELD TESTING

1979 ◽  
Vol 59 (4) ◽  
pp. 1013-1017 ◽  
Author(s):  
L. O’BRIEN ◽  
R. J. BAKER ◽  
L. E. EVANS
Keyword(s):  
Triticum Aestivum ◽  
Genetic Correlations ◽  
Triticum Aestivum L ◽  
Hill Plot ◽  
Hill Plots

The yields of F3 lines of four wheat (Triticum aestivum L. em Thell.) crosses were measured in replicated hill plots and row plots. Genetic correlations between line performance in the two plot-types varied from 0.77 to 0.96 in the four crosses. Selection based on a single hill plot was estimated to be 50–75% as efficient as selection based on a single three-row plot. Two to four replicates of hill plots would be required to give the equivalent information of one three-row plot. Hill plots require less seed and land than row plots but, in contrast to the totally mechanized operation for row plots, must be planted and harvested by hand.

scholarly journals Cooperativity, absolute interaction, and algebraic optimization

2020 ◽  
Vol 81 (4-5) ◽  
pp. 1169-1191
Author(s):  
Nidhi Kaihnsa ◽  
Yue Ren ◽  
Mohab Safey El Din ◽  
Johannes W. R. Martini
Keyword(s):  
Optimization Problem ◽  
Oxygen Binding ◽  
Hill Plot ◽  
Nonlinear Algebra ◽  
Algebraic Optimization ◽  
The Hill ◽  
Binding Curves

Abstract We consider a measure of cooperativity based on the minimal interaction required to generate an observed titration behavior. We describe the corresponding algebraic optimization problem and show how it can be solved using the nonlinear algebra tool . Moreover, we compute the minimal interactions and minimal molecules for several binding polynomials that describe the oxygen binding of various hemoglobins under different conditions. We compare their minimal interaction with the maximal slope of the Hill plot, and discuss similarities and discrepancies with a view towards the shapes of the binding curves.

Hill plots for yield evaluation in a doubled haploid recurrent selection program in barley (Hordeum vulgare L.)

1996 ◽  
Vol 76 (4) ◽  
pp. 757-761 ◽  
Author(s):  
D. E. Falk ◽  
E. Reinbergs ◽  
B. S. Chhina ◽  
D. E. Mather
Keyword(s):  
Powdery Mildew ◽  
Grain Yield ◽  
Doubled Haploid ◽  
Recurrent Selection ◽  
Agronomic Traits ◽  
Hordeum Vulgare L ◽  
Selection Program ◽  
Hill Plot ◽  
Plot Yield ◽  
Hill Plots

Seven selected doubled haploid lines, from each of three cycles (C0, C1, C2) of a diallel recurrent selection program, the seven original parents and two check cultivars were evaluated in replicated hill and row plots at two locations in Ontario in 1988 and 1989. Comparison of hill and row plots using means ranges, coefficient of variation, repeatability and correlations among traits indicated that grain yield, days to heading plant height and powdery mildew resistance could be evaluated with similar accuracy and precision using either of the methods. Regression of row plot yield on hill plot yield was positive and highly significant showing a strong relationship between the two plot types for grain yield. Selection efficiency in hill plots was high for all the traits. The percentage of lines with similar performance for yield in both the plot types was high. The hill plot method appears to be a useful technique for evaluating homozygous lines for yield and other agronomic traits in a doubled haploid recurrent selection program in six-row barley. Key words:Hordeum vulgare L., barley, breeding methods, yield, powdery mildew, doubled haploid, recurrent selection

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